DICE Please make Battlefield 1 Serbia DLC

When Battlefield 1 came out we could only play with: United Kingdom,Ottoman Empire,German Empire,Austria-Hungary,Italy and United States Of America.

Many people were mad because they Didn't add France and Russia. After some time they made A French DLC "They shall not pass" and for few months is coming the Russian DLC called "In the name of the Tsar". But where is Serbia? Serbia made a big role in the First World War and such a small kingdom made unbelievable victories against such a big empire (Austria-Hungary).

If they make this DLC i would like to see some maps like: Cer, Kolubara...